Apparatus and method for emissions control through continuous filtration system
OwnerDavid Christopher Aviñainventor
Life of this patent
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Abstract
A method of improving the removal of particulate matter, heavy metals, and acidic gases in waste gas emission streams through continuous filter control through the utilization of independent chambers to divert the flow of waste gas during the cleaning and precoating cycles of the chamber to optimize emission collection efficiency and prevent fugitive emissions.
Claims9
A method for continuous emission control of pollutants in a fluid stream using an apparatus comprising two or more parallel chambers enclosing a plurality of filter media in a unitary housing, the chambers having a common manifold inlet section and a common manifold outlet section within the housing, the method comprising:
- Providing divider walls within the housing to define the chambers in between the inlet and outlet manifold sections, and providing chamber inlet and outlet isolation dampers between the divider walls of the chambers;
- providing a source of reactive sorbent material for coating the plurality of filter media;
- terminating a flow of waste gas flow through one of the chambers by closing the chamber outlet isolation damper and cleaning the plurality of filters by providing a discharge opening for ash and spent sorbent through an inlet side of the filters;
- closing the chamber inlet isolation damper after the filters are cleaned and ash and spent sorbent are discharged;
- supplying a clean purging air from a connection separate from the inlet side of the filters;
- supplying a sorbent laden clean air supply having an elevated temperature for purging waste gas and dust while the outlet opening dampers are closed to prevent waste gas from flowing through the cleaned filter media, and depositing a coating of sorbent upon the surface of the plurality of filters;
- opening the chamber inlet isolation damper after the coating has been established to expose the coated filter media to waste gas flow while maintaining sorbent supply entrained in clean heated air;
- and
- terminating the clean air supply when the inlet dampers are fully opened.
An apparatus for continuous emission control of pollutants, comprising two or more parallel chambers enclosing a plurality of filter media in a unitary bag house, the chambers having a common manifold inlet section and a common manifold outlet section;
- divider walls within the bag house to define the chambers in between the inlet and outlet manifold sections;
- chamber inlet isolation dampers at a downstream side of the plurality of filter media and between the divider walls of the chambers;
- chamber outlet isolation dampers at a downstream side of the plurality of filter media and between the divider walls of the chambers;
- a source of reactive sorbent material in communication with each chamber for coating the plurality of filter media;
- the common manifold sections located within the bag house and outside of the chambers defined by divider walls and dampers.
Dependencies are inferred from the claim text.